Aaeon AEC-6821, Manual

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E m b e d d e d C o n t r o l l e r A E C - 6 8 2 1
Appendix A Programming the Watchdog Timer A-11
A.1 Programming for AEC-6821 Rev.B
AEC-6821 Rev.B utilizes W83627EHG chipset as its watchdog
timer controller.
Below are the procedures to complete its configuration and the
AAEON intial watchdog timer program is also attached based on
which you can develop customized program to fit your application.
Configuring Sequence Description
Select register of
watchdog timer
Enable the function of
the watchdog timer
Lock W83627EHG
Use the function of the
watchdog timer
Unlock W83627EHG
There are three steps to complete the configuration setup:
(1) Enter the W83627EHG config Mode
(2) Modify the data of configuration registers